Molding-machine.



L. T. KENNY. MOLDING MACHINE. APPLIOATION FILED MAB. 2, 1912.

Patented Nov. 26, 1912.

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COLUMBIA PLANOGRAPH C0.. WASHINGTON, D. C.

' L. T. KENNY.

MOLDING MACHINE.

. APPLICATION FILED MAR.2, 1912.

Patented Nov. 26, 1912.

2 SHEETS-SHEET 2.

LUTHER T. KENNY, OF I-IAWARDEN, IOWA.

MOLDING-MACHINE.

Specification of Letters Patent.

Patented Nov. 26, 1912.

Application filed. March 2, 1912. Serial No. 681,076.

' To all whom it may concern:

Be it known that I, LUTHER T. KENNY, a citizen of the United States,residing at Hawarden, in the county of Sioux and State,

of Iowa, have invented certain new and useful Improvements inMolding-Machines, of which the following is a specification.

This invention relates to new and useful improvements in moldingmachines.

The primary object of this invention is to provide a rapid andeconomical means of molding or manufacturing concrete or cement curbingor blocks useful for well curbing, sewer manholes, catch basins, vaults,area-ways, arches, etc. The blocks may be used wherever brick arenowused.

With the foregoing object in view, the in vention consists in the novelfeatures of construction, combination, and arrangement of partsillustrated in the drawings and more particularly pointed out in theappended claims In the accompanying drawings, which are for illustrativepurposes only and are therefore not drawn to scale :-Figure 1 isan endview of a molding machine embodying my improvements. Fig. 2 is a sideelevation of Fig. 1. Fig. 3 is a plan view on an enlarged scale. Fig. 1is a similar View, showing how the mold is opened after two concretebodies are formed. Fig. 5 is a transverse section, taken on the planeindicated by the dotted lines 5-5 of Fig. 3, looking in the directionindicated by the arrows, and Fig. 6 is a central longitudinal sectiontaken on the line 6-6 of Fig. 3. Fig. 7 is a perspective view of theproduct.

In the embodiment illustrated, 1 indicates the supporting frame, whichis only diagrannnatically indicated, and may be of any approved form, 2the pallet board, mounted on the top of the frame and held againstlongitudinal movement relative thereto by the cross pieces 3, or otherequivalent means, and 4 the mold proper.

The mold consists of a back plate 5, which may be curved longitudinally,shown, a front plate 6, which is also curved longitudinally toward thecenter of the mold, and the end doors 7 and 8, respectively. The moldfurther comprises the hollow cores 9 and 10, respectively, which aretapered toward the center of the mold and are formed with thelongitudinal side walls 11, formed on a gradual curve to correspond withthe curvature of the front and back plates of the mold.

By virtue of the foregoing construction of the front and back plates andcores, when the mold is in locked or molding position, it is adapted toform cement or concrete curbing of arcuate form and of uniform width,indicated in the drawings by the reference numerals 12 and 13.

It will be observed that the end door 7 is provided in its inner facenear opposite ends, with the vertical V-shaped grooves 1 1 and the enddoor 8 with corresponding ribs 15, said grooves and ribs adapted toform, re

spectively, corresponding V-shaped ribs or I lugs and grooves 16 and 17,at opposite ends of the curbing.

The end doors or member of the mold are provided with the inwardlyprojecting longitudinally slotted bearing plates 18, which are arrangedat opposite ends of the doors at the center with the outer ends rivetedor otherwise secured, as at 19, to the horizontal outstanding lugs 20cast at the outer faces of the doors, and with their inner slotted endsextending through the slots 21 in the doors into the interior of thecores, as shown. The top and bottom walls of the cores are provided withthe bearing pins 22, which work in the slots of the bearing plates.

The bearing plates and pins 18 and 22, respectively, form two importantfunctions: first, they provide a hinge bearing for the cores, andsecond, they allow the end doors to be partially opened after thecurbing or blocks are formed, before withdrawing the cores, thuspermitting the cores to be swung into an out-of-the-way position, asindicated in Fig. 4, without marring or disturbing the freshly moldedconcrete.

The inner ends of the cores are provided with the tongue and groove 23and 24, respectively, which interlock when in molding position, asshown, and hold the core members rigidly in place.

The end doors or member may be detaclr ably hinged to the ends of theback plate in any appropriate manner. For example, the back plate may beprovided at each end with a pair of vertcally spaced bearing cars 25, towhich may be hingedly connected, by pins 26 or other equivalent means,the laterally extending bearings ears 27 of the end doors.

The front plate is hingedly connected in 7 pass through correspondingapertures in the ears 32 and 33, respectively. The tapered pincompensate for any lost motion in the hinges, serving to close the enddoors tight.

The back plate is detachably secured to the frame 1 in any suitablemanner; for example, it may be bolted to standards 34 of the frame.

Attention is invited to the fact that by substituting straight front andback plates for the ones shown and described, straight faced blocks maybe made with the machine.

From the foregoing described taken in connection with the drawings, itis thought that the construction and operation of the device will bereadily understood without requiring a more extended explanation. 7

Various changes in the form, proportions and minor details ofconstruction may be resorted to without departing from the principles orsacrificing any of the advanages of this invention as defined in theappended claims.

Having described my invention, what I claim as new, is

1. In a molding machine of the character specified, a back plate, endmembers hinged to the ends of the back plate, a front plate hinged tothe free end of one of the end members, means for connecting the freeend of the front plate with the other end member, and a pair of hollowinwardly tapered core members hingedly and slidably connected with theend members whereby the latter may be partially opened before the coremembers are withdrawn from molding position and whereby the core memberswhen withdrawn are swung into inoperative posi groove, respectively,hingedly and slidably connected at their outer ends to the end membersof the mold, whereby the core members may be withdrawn from moldingposition in the arc of a circle without disturbing the freshly moldedconcrete.

In testimony whereof I afiix my signature in presence of two witnesses.

LUTHER T. KENNY. Witnesses:

M. J. HAMMETT, J. E. Scorn Copies of this patent may be obtained forfive cents each, by addressing the Commissioner of Patents,

Washington, D. 0.

